• No results found

Additional Classification Considerations

Amendments to Regulation (EC) No 1907/2006 from 1 June 2015 Regulation (EC) No 1907/2006 shall be amended from 1 June 2015 as

Article 62 Entry into force

2. PART 2: PHYSICAL HAZARDS 1. Explosives

2.5. Gases under pressure 1. Definition

2.6.4. Additional Classification Considerations

2.6.4.1. For the classification of flammable liquids data on flash point and initial boiling point are needed. Data can be determined by testing, found in literature or calculated. If data are not available, the flash point and the initial boiling point shall be determined through testing. For flash point determination a closed-cup method shall be used.

2.6.4.2. ►M2 In the case of mixtures ( 1 ) containing known flammable liquids in defined concentrations, although they may contain non- volatile components e.g. polymers, additives, the flash point need not be determined experimentally if the calculated flash point of the mixture, using the method given in 2.6.4.3, is at least 5 °C ( 2 ) greater than the relevant classification criterion (23 °C and 60 °C, respectively) and provided that: ◄

▼B

( 1 ) To date, the calculation method has been validated for mixtures containing up to 6 volatile components. These components may be flammable liquids like hydrocarbons, ethers, alcohols, esters (except acrylates), and water. It is however not yet validated for mixtures containing halogenated sulphurous, and/or phosphoric compounds as well as reactive acrylates.

( 2 ) If the calculated flash point is less than 5 °C greater than the relevant classification criterion, the calculation method may not be used and the flash point should be determined experimentally.

(a) the composition of the mixture is accurately known (if the material has a specified range of composition, the composition with the lowest calculated flash point shall be selected for assessment);

(b) the lower explosion limit of each component is known (an appropriate correlation has to be applied when these data are extrapolated to other temperatures than test conditions) as well as a method for calculating the lower explosion limit ►M2 of the mixture ◄;

(c) the temperature dependence of the saturated vapour pressure and of the activity coefficient is known for each component as present in the mixture;

(d) the liquid phase is homogeneous.

2.6.4.3. One suitable method is described in Gmehling and Rasmussen (Ind.

Eng. Fundament, 21, 186, (1982)). For a mixture containing non- volatile components the flash point is calculated from the volatile components. It is considered that a non-volatile component only slightly decreases the partial pressure of the solvents and the calculated flash point is only slightly below the measured value.

2.6.4.4. Possible test methods for determining the flash point of flammable liquids are listed in Table 2.6.3.

Table 2.6.3

Methods for determining the flash point of flammable liquids European standards: EN ISO 1516 as amended

Determination of flash/no flash — Closed cup equilibrium method

EN ISO 1523 as amended

Determination of flash point — Closed cup equilibrium method

EN ISO 2719 as amended

Determination of flash point — Pensky- Martens closed cup method

EN ISO 3679 as amended

Determination of flash point — Rapid equi­

librium closed cup method EN ISO 3680 as amended

Determination of flash/no flash — Rapid equilibrium closed cup method

EN ISO 13736 as amended

Petroleum products and other liquids — Determination of flash point — Abel closed cup method

National standards:

Association française de normal­

isation, AFNOR:

NF M07-036 as amended

Détermination du point d'éclair — Vase clos Abel-Pensky

(identical to DIN 51755)

▼B

__________

▼B

Deutsches Institut

für Normung DIN 51755 (flash points below 65 C) as amended Prüfung von Mineralölen und anderen brennbaren Flüssigkeiten;

Bestimmung des Flammpunktes im gesch­

lossenen Tiegel, nach Abel-Pensky (identical to NF M07-036)

▼M2

2.6.4.5 Liquids with a flash point of more than 35 °C and not more than 60 °C need not be classified in Category 3 if negative results have been obtained in the sustained combustibility test L.2, Part III, section 32 of the UN RTDG, Manual of Tests and Criteria.

2.6.4.6. Possible test methods for determining the initial boiling point of flammable liquids are listed in Table 2.6.4.

Table 2.6.4

Methods for determining the initial boiling point of flammable liquids

European standards: EN ISO 3405 as amended

Petroleum products — Determination of distillation characteristics at atmospheric pressure

EN ISO 3924 as amended

Petroleum products — Determination of boiling range distribution — Gas chroma­

tography method

EN ISO 4626 as amended

Volatile organic liquids — Determination of boiling range of organic solvents used as raw materials

Regulation (EC) No

440/2008 ( 1 ) Method A.2 as described in Part A of the Annex to Regulation (EC) No 440/2008 ( 1 ) OJ L 142, 31.5.2008, p. 1.

▼B

2.7. Flammable solids 2.7.1. Definition

2.7.1.1. A flammable solid means a solid which is readily combustible, or may cause or contribute to fire through friction.

Readily combustible solids are powdered, granular, or pasty substances or mixtures which are dangerous if they can be easily ignited by brief contact with an ignition source, such as a burning match, and if the flame spreads rapidly.

2.7.2. Classification criteria

2.7.2.1. Powdered, granular or pasty substances or mixtures (except powders of metals or metal alloys — see 2.7.2.2) shall be classified as readily combustible solids when the time of burning of one or

▼M2

more of the test runs, performed in accordance with the test method described in Part III, sub-section 33.2.1, of the ►M4 UN RTDG ◄, Manual of Tests and Criteria, is less than 45 seconds or the rate of burning is more than 2,2 mm/s.

2.7.2.2. Powders of metals or metal alloys shall be classified as flammable solids when they can be ignited and the reaction spreads over the whole length of the sample in 10 minutes or less.

2.7.2.3. A flammable solid shall be classified in one of the two categories for this class using Method N.1 as described in 33.2.1 of the

►M4 UN RTDG ◄, Manual of Tests and Criteria in accordance with Table 2.7.1:

Table 2.7.1 Criteria for flammable solids Category Criteria

1

Burning rate test

Substances and mixtures other than metal powders:

(a) wetted zone does not stop fire and

(b) burning time < 45 seconds or burning rate >

2,2 mm/s Metal powders

burning time ≤ 5 minutes

2

Burning rate test

Substances and mixtures other than metal powders:

(a) wetted zone stops the fire for at least 4 minutes and (b) burning time < 45 seconds or burning rate >

2,2 mm/s Metal powders

burning time > 5 minutes and ≤ 10 minutes

▼M2

Note 1:

The test shall be performed on the substance or mixture in its physical form as presented. If, for example, for the purposes of supply or transport, the same chemical is to be presented in a physical form different from that which was tested and which is considered likely to materially alter its performance in a classifi­

cation test, the substance shall also be tested in the new form.

Note 2:

Aerosols shall not be classified as flammable solids; see section 2.3.

▼B

2.7.3. Hazard Communication

Label elements shall be used for substances or mixtures meeting the criteria for classification in this hazard class in accordance with Table 2.7.2.

▼B

Table 2.7.2

Label elements for flammable solids

Classification Category 1 Category 2 GHS Pictograms

Signal Word Danger Warning Hazard Statement H228: Flammable

Solid H228: Flammable Solid Precautionary

Statement Prevention

P210 P240 P241 P280

P210 P240 P241 P280 Precautionary

Statement Response

P370 + P378 P370 + P378

Precautionary Statement Storage Precautionary Statement Disposal

2.8. Self-reactive substances and mixtures